公开(公告)号：US20160218679A1

公开(公告)日：2016-07-28

申请号：US14996809

申请日：2016-01-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Hyun JANG ,  Bong Hyuk PARK ,  Nam Sik RYU ,  Dong Seung KWON

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0222 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451 ,  H03G3/30 ,  H03G3/3005

Abstract: Provided is an apparatus for adjusting an envelope signal delay in an envelope-tracking power amplifier. The apparatus includes: an envelope signal providing unit configured to provide an envelope signal; a variable negative group delay unit configured to adjust a group delay of the envelope signal received from the envelope signal providing unit and output the adjusted envelope signal; an envelope modulator configured to modulate the envelope signal outputted from the variable negative group delay unit; a group delay difference detecting unit configured to detect a group delay difference between the envelope signal which is outputted from the envelope signal providing unit and the envelope signal which is outputted from the envelope modulator; and a control signal generating unit configured to generate a control signal to control a group delay value of the variable negative group delay unit according to the group delay difference.

Abstract translation: 提供了一种用于调整包络跟踪功率放大器中的包络信号延迟的装置。 该装置包括：包络信号提供单元，被配置为提供包络信号; 可变负组延迟单元，被配置为调整从包络信号提供单元接收的包络信号的组延迟并输出调整的包络信号; 包络调制器，被配置为调制从所述可变负组延迟单元输出的包络信号; 组延迟差检测单元，被配置为检测从包络信号提供单元输出的包络信号与从包络调制器输出的包络信号之间的组延迟差; 以及控制信号生成单元，被配置为根据组延迟差产生控制信号以控制可变负组延迟单元的组延迟值。